Bathroom Sink Slow to Drain: Causes and Fixes
A bathroom sink that drains slowly is more than an inconvenience—it’s often a sign that debris is building up somewhere in the drain line. While some causes are easy to fix at home, others require more targeted checks to prevent recurring clogs.
Below are the most common reasons bathroom sinks drain slowly, along with practical ways to troubleshoot and resolve each issue safely.
Hair, soap scum, and everyday debris
The most frequent culprit is a partial blockage formed by hair, soap scum, toothpaste residue, and mineral buildup. This kind of gunk tends to collect around the drain opening, in the stopper mechanism, or just below the sink where flow first slows.
Start by removing any visible debris from the drain strainer. If your sink has a removable stopper, take it out and clean it thoroughly. For deeper buildup, use a drain brush or flexible tool designed for household sinks ... Read more »
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